CFNY-FM, branded as 102.1 the Edge, is a Canadian radio station, broadcasting at 102.1 FM in the Greater Toronto Area. The station rose to prominence in the 1970s and 1980s due to its freestyle DJing format and unique (at that point) choice to play alternative music. Following a number of years hallmarked by internal problems and a listener rebellion as a result of management decisions, the station eventually evolved into its current modern rock format owned by Corus Entertainment. The station's studios are in Downtown Toronto at Corus Quay on Toronto's Harbourfront. Its transmitter is located atop the CN Tower.